TW201434652A - Separator connecting device for electric appliance and electric appliance and joining method thereof - Google Patents

Abstract

[Problem] An electric appliance (1) capable of preventing scattering of the heat-resistant material (32) of the separator (30) even if it is vibrated or subjected to an impact. Further, the separator joining device (100) of the electric appliance (1) which can be prevented from scattering the heat-resistant material (32) of the partition member (30) and the joining method thereof are provided in the partition joining device. [Means for Solving the Problem] The electric appliance has a power generating element (60). In the power generating element, a first electrode (positive electrode 10) and a second electrode (negative electrode 20) having a polarity different from that of the first electrode are laminated via a separator. The separator is a heat-resistant material (32) including a molten material (31) and a single layer laminated on the molten material and higher than the melting temperature of the molten material. The adjacent separators are joined to each other such that the heat resistant materials are opposed to each other.

Description

Separator connecting device for electric appliance and electric appliance and joining method thereof

The present invention relates to a separator joining device for an electric appliance and an electric appliance, and a joining method thereof.

Conventionally, an electric appliance such as a secondary battery is a power generating element that is sealed and charged and discharged by a member material. The power generating element is composed of a laminated electrode and a separator. The separator is easily shrunk as soon as it is heated. If the separator shrinks, a local electrical short circuit will occur and the output of the appliance will drop.

Here, a separator is used which is provided with a heat-melting layer having a melting point lower than the melting point of the heat-resistant layer in a heat-resistant heat-resistant layer, and is configured to prevent shrinkage even when the separator is heated. The laminated battery. The heat-melting layers of the separator of the laminated battery are fixed to each other by heat fusion (for example, refer to Patent Document 1).

By the way, as a means for laminating the electrode and the separator, it is revealed that the first and second separator raw materials are taken out in accordance with the rotation of the adsorption roller, and the adsorption roller is used to pack the electrode with the separator during one rotation. The structure which is formed and formed (for example, refer to Patent Document 2). Also, reveal A configuration in which the periphery of the electrode plate is surrounded by the continuous separator and the position of the electrode plate is prevented from being erroneous is shown (for example, refer to Patent Document 3).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. 2011-210524 (see Figs. 14 and 15)

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2011-003381

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2009-009919

However, in the configuration of Patent Document 1, as shown in FIGS. 14 and 15 , the heat-resistant layers of the separator are exposed on the outermost surfaces of both ends of the laminate. Further, a heat-resistant layer is also exposed at both end portions of each separator.

In such a state, when the laminated battery vibrates or is subjected to an impact, the heat-resistant material of the separator scatters, and the electrical properties are degraded. Further, in the separator shown in FIG. 3 of Patent Document 1, since the heat-melting layer is provided on both surfaces of the heat-resistant layer, the heat-resistant material does not scatter, but the layer thickness of the separator becomes thick.

Furthermore, in any of the above-mentioned Patent Documents 2 and 3, it is not considered that the heat-dissipating material and the molten material are laminated and formed. When the separator is used, the heat-resistant material which is easy to scatter is not scattered.

In such a configuration, when a separator formed by laminating a heat-resistant material and a molten material is used, the heat-resistant material of the separator is scattered in the separator joining device.

In order to solve the above problems, an object of the present invention is to provide an electric appliance which can prevent scattering of a heat-resistant material of a separator even if it is vibrated or impacted.

In order to solve the above problems, an object of the present invention is to provide a separator joining device for an electric appliance capable of preventing scattering of a heat-resistant material of a separator in a separator joining device, and a joining method therefor.

The electric appliance of the present invention for achieving the above object has a power generating element. The power generating element has a first electrode laminated with a separator and a second electrode having a polarity different from that of the first electrode. The separator is a heat-resistant material containing a molten material and a single layer which is laminated only on one side of the molten material and higher than the melting temperature of the molten material. The adjacent separators are joined to each other such that the heat resistant materials are opposed to each other.

Further, the electric appliance of the present invention for achieving the above object has a power generating element. The power generating element has a first electrode laminated with a separator and a second electrode having a polarity different from that of the first electrode. The separator is a heat-resistant material containing a molten material and a single layer laminated on the molten material and higher than the melting temperature of the molten material. The side of the molten material of the separator is held by the conveying device and conveyed, and the heat-resistant materials of the adjacent separators are opposed to each other. Adjacent spacers are joined to each other.

The separator joining device for an electric appliance according to the present invention which achieves the above object is a joining device in which a first electrode and a separator of a second electrode which are different in polarity from the first electrode are joined to each other. A separator containing a molten material and a heat-resistant material laminated only on one side of the molten material and higher than the melting temperature of the molten material is used. Here, the side of the molten material of the separator is held by the conveying device and conveyed, and the separators that face the adjacent heat-resistant members of the separators and are adjacent to each other are joined to each other.

Further, the separator joining method of the electric appliance according to the present invention for achieving the above object is a joining method in which the first electrode and the separator of the second electrode which are different in polarity from the first electrode are joined to each other. A separator containing a molten material and a heat-resistant material laminated only on one side of the molten material and higher than the melting temperature of the molten material is used. Here, one side of the molten material of the separator is held and conveyed, and the separators that face the adjacent heat-resistant members of the separators and are adjacent to each other are joined to each other.

1‧‧‧Electrical appliances

10‧‧‧ positive electrode (first electrode)

11‧‧‧ positive current collector

11a‧‧‧positive electrode terminal

12‧‧‧ positive active material

20‧‧‧Negative electrode (2nd electrode)

21‧‧‧Negative current collector

21a‧‧‧Negative electrode terminal

22‧‧‧Negative active material

30‧‧‧Parts

31‧‧‧ molten material

32‧‧‧Heat-resistant materials

40‧‧‧External component materials

41, 42‧‧‧ layers

50, 70‧‧‧ bagged electrodes

60‧‧‧Power generation components

100‧‧‧Parts jointing device

210‧‧‧ positive winding roller

220‧‧‧Transport roller

310‧‧‧Sucking conveyor (transporting device)

320‧‧‧Rotating roller

410, 420, 430, 440‧‧‧cutting members

510, 610‧‧‧Parts winding roller

520, 620‧‧‧ Pressurized roller

530, 630‧‧‧Clamping roller

540, 640‧‧‧ Vacuum suction conveyor roller (transporting device)

710‧‧‧heating and pressing members

810‧‧‧Bag electrode adsorption pad (transport device)

820‧‧‧Flexing Department

830‧‧‧Support members

840‧‧‧ rails

850‧‧‧mounting table

Fig. 1 is a perspective view showing an electric appliance according to a first embodiment.

Fig. 2 is an exploded view showing an electric appliance according to the first embodiment.

3 is a perspective view showing a state in which a negative electrode is laminated on both ends of a packaged electrode formed by attaching a positive electrode according to the first embodiment to a pair of separators.

Fig. 4 is a cross-sectional view taken along line 4-4 of Fig. 3 showing the first embodiment. view.

Fig. 5 is a perspective view showing a separator joining device for joining a separator of the electric appliance according to the first embodiment.

Fig. 6 is a side view showing the vacuum suction conveyance roller of the separator joining device for joining the separator of the electric device according to the first embodiment.

Fig. 7 is a side view showing the vicinity of a suction conveyor in which a separator joining device for a separator of an electric appliance according to the first embodiment is joined.

Fig. 8 is a side view showing the vicinity of a pocket electrode adsorption pad of a separator joining device for joining a separator of an electric appliance according to the first embodiment.

Fig. 9 is a perspective view showing the vicinity of a heating and pressurizing member of a separator joining device for joining a separator of an electric appliance according to the first embodiment.

Fig. 10 is a cross-sectional view taken along line 10-10 of Fig. 9 of the first embodiment.

[Fig. 11] Fig. 11 is a cross-sectional view showing a part of an electric appliance in a state in which a positive electrode is laminated on both ends of a pocket electrode formed by sandwiching a negative electrode of a second embodiment with a pair of separators.

Hereinafter, the embodiment of the present invention will be described with reference to the attached drawings. In the description of the drawings, the same components are denoted by the same reference numerals, and the repeated description is omitted. The size or proportion of each member of the drawing is exaggerated for the sake of explanation, and may be different from the actual size or ratio.

[First embodiment]

First, the configuration of the electric appliance 1 in which the separators 30 are joined to each other by the separator joining device 100 according to the first embodiment will be described with reference to Figs. 1 to 4 .

1 is a perspective view showing the electric appliance 1 in which the separator 30 is joined by the spacer joining device 100. 2 is an exploded view showing the electric appliance 1 in which the partition member 30 is joined by the spacer joining device 100. 3 is a perspective view showing a state in which the negative electrode 20 is laminated on both ends of the packaged electrode 50 formed by sandwiching the positive electrode 10 with a pair of separators 30 by the separator bonding apparatus 100. Figure 4 is a cross-sectional view taken along line 4-4 of Figure 3.

The electric appliance 1 is as shown in FIG. 1, and corresponds to, for example, a lithium ion secondary battery, a polymer lithium battery, a nickel-hydrogen battery, or a nickel-cadmium battery. The electric appliance 1 is shown in Fig. 2, and the external component material 40 seals the power generating element 60 that is charged and discharged. The power generating element 60 is configured by alternately laminating the packaged electrode 50 and the negative electrode 20 which are sandwiched between the positive electrode 10 by a pair of separators 30.

The positive electrode 10 corresponds to the first electrode, and is formed by bonding the positive electrode active material 12 to both surfaces of the positive electrode current collector 11 of the conductor as shown in FIG. 2 . The positive electrode terminal 11a from which electric power is taken out is formed by extending a part of one end of the positive electrode current collector 11. The positive electrode terminal 11a of the positive electrode 10 is laminated in plural, and is fixed to each other by welding or subsequent.

For the material of the positive electrode current collector 11 of the positive electrode 10, for example, a porous metal made of aluminum, a mesh fabric made of aluminum, or a punched metal made of aluminum is used. In the case of the material of the positive electrode active material 12 of the positive electrode 10, when the electric device 1 is a lithium ion secondary battery, various oxides (LiMn ₂ O ₄ lithium manganese oxide, manganese dioxide, LiNiO ₂ type) are used. Lithium nickel oxide, LiCoO ₂ type lithium cobalt oxide, lithium-containing nickel cobalt oxide, lithium-containing amorphous vanadium pentoxide, or a chalcogen compound (titanium disulfide or molybdenum disulfide).

The negative electrode 20 corresponds to a second electrode different from the first electrode (positive electrode 10), and is formed by bonding the negative electrode active material 22 to both surfaces of the negative electrode current collector 21 of the conductor as shown in FIG. 2 . The negative electrode terminal 21a is formed to extend from a part of one end of the negative electrode current collector 21 so as not to overlap with the positive electrode terminal 11a formed on the positive electrode 10. The length of the negative electrode 20 in the longitudinal direction is longer than the length of the positive electrode 10 in the longitudinal direction. The length of the negative electrode 20 in the short-side direction is the same as the length of the positive electrode 10 in the short-side direction. The negative electrode terminal 21a of the negative electrode 20 is laminated in plural, and is fixed to each other by welding or subsequent.

For the material of the negative electrode current collector 21 of the negative electrode 20, for example, a porous metal made of copper, a mesh fabric made of copper, or a punched metal made of copper is used. In the case of the material of the negative electrode active material 22 of the negative electrode 20, in the case where the electric device 1 is a lithium ion secondary battery, a carbon material that occludes and discharges lithium ions is used. For such carbon materials, for example, natural graphite, artificial graphite, soot, activated carbon, carbon fiber, coke, or heat treatment of organic precursors (phenolic resin, polyacrylonitrile, or cellulose) in an inert environmental atmosphere ) and the synthesis of carbon.

The separator 30, as shown in FIG. 2, is disposed on the positive electrode 10 The positive electrode 10 and the negative electrode 20 are electrically isolated from the negative electrode 20. The separator 30 holds the electrolyte between the positive electrode 10 and the negative electrode 20 to ensure the conductivity of the ions. The separator 30 is formed in a rectangular shape. The length of the separator 30 in the longitudinal direction is longer than the length of the negative electrode 20 of the portion where the negative electrode terminal 21a is buckled.

The separator 30 is formed as shown in FIG. 4, for example, by laminating a molten material 31 and a heat-resistant material 32. The heat resistant material 32 has a higher melting temperature than the molten material 31. The adjacent separators 30 are joined in a state in which the heat-resistant materials 32 are opposed to each other. Therefore, the heat-resistant material 32 can be sealed to the inside of the separator 30 adjacent to the powder even if it is applied to the molten material 31 and dried and then scatters. That is, even if the electric appliance 1 vibrates or is subjected to an impact, in the electric appliance 1, the scattering of the heat-resistant material 32 of the partition member 30 can be prevented.

Here, the heat-resistant material 32 of the separator 30 and the positive electrode active material 12 of the positive electrode 10 are abutted. A frictional force is generated between the heat resistant material 32 and the positive electrode active material 12. Therefore, even if the electric appliance 1 vibrates or is subjected to an impact, the movement of the positive electrode 10 can be suppressed in the pouch electrode 50 in which the positive electrode 10 is packed by the separator 30. In other words, in the electric appliance 1, by suppressing the variation in the lamination of the positive electrode 10, damage of the electric appliance 1 is prevented, and electrical characteristics can be maintained.

As the material of the molten material 31 of the separator 30, for example, polypropylene is used. The molten material 31 is impregnated into a non-aqueous electrolyte solution prepared by dissolving an electrolyte to a non-aqueous solvent. In order to maintain the non-aqueous electrolyte, it contains a polymer. Separator In the material of the heat-resistant material 32 of 30, for example, a ceramic in which an inorganic compound is formed at a high temperature is used. The ceramic is formed by a porous material formed by bonding ceramic particles such as cerium oxide, aluminum oxide, zirconium oxide, or titanium oxide to a binder. The material of the heat-resistant material 32 is not limited to ceramics, and may be higher than the melting temperature of the molten material 31.

The outer member material 40 is formed by, for example, the laminate sheets 41 and 42 having a metal plate inside, and is covered with the power generating element 60 on both sides and sealed. When the power generating element 60 is sealed by the laminate sheets 41 and 42, a part of the periphery of the laminated sheets 41 and 42 is opened, and the other periphery is sealed by heat fusion or the like. The electrolyte is injected from the open portions of the laminate sheets 41 and 42 to impregnate the separator 30 and the like. Air is extracted while the open portions of the laminate sheets 41 and 42 are decompressed inside, and the open portion is thermally welded to be completely sealed.

For the material of the laminate sheets 41 and 42, for example, three types of materials are laminated. Specifically, for the material of the heat-fusible resin of the first layer adjacent to the negative electrode 20, for example, polyethylene (PE), an ionic polymer, or ethylene/vinyl acetate (EVA) is used. As the metal foil of the second layer, for example, an Al foil or a Ni foil is used. As the resin film of the third layer, for example, rigid polyethylene terephthalate (PET) or nylon is used.

According to the electric appliance 1 in which the separators 30 are joined to each other by the separator joining device 100 of the present embodiment described above, the following operational effects are exhibited.

The electric appliance 1 has a power generating element 60. Power generation component 60 The first electrode (positive electrode 10) and the second electrode (negative electrode 20) having a polarity different from that of the first electrode (positive electrode 10) are laminated via the separator 30. The separator 30 is a heat-resistant material 32 including the molten material 31 and only one side of the molten material 31 and higher than the melting temperature of the molten material 31. Adjacent spacers 30 are joined to each other such that the heat-resistant materials 32 face each other.

According to the electric appliance 1 thus constituted, the inside of the partition member 30 adjacent to the heat-resistant material 32 can be sealed. Therefore, even if the electric appliance 1 vibrates or is subjected to an impact, scattering of the heat-resistant material 32 of the partition member 30 can be prevented. Therefore, the electrical characteristics of the electric appliance 1 can be maintained.

Further, according to the electric appliance 1, the first electrode (positive electrode 10) and the second electrode (negative electrode 20) may be formed by a separator 30 that is adjacent to the electrode having a relatively high frictional force with the heat-resistant material 32. Hold and join.

According to the electric appliance 1 thus constituted, for example, the heat-resistant material 32 of the separator 30 and the positive electrode active material 12 of the positive electrode 10 are abutted to generate a frictional force. Therefore, even if the electric appliance 1 vibrates or is subjected to an impact, the movement of the positive electrode 10 can be suppressed in the pouch electrode 50 in which the positive electrode 10 is packed by the separator 30. In other words, in the electric appliance 1, by suppressing the variation in the lamination of the positive electrode 10, damage of the electric appliance 1 is prevented, and electrical characteristics can be maintained.

Further, according to the electric appliance 1, the heat-resistant material 32 may be configured to include a powder which is applied to the molten material 31 and dried.

According to the electric appliance 1 thus constituted, the heat-resistant material 32 is a powder-like body which is particularly likely to scatter like a powder, and can seal the inside of the separator 30 which is adjacent to the powder. That is, even if the appliance is vibrating In the electric appliance 1, the molten material 31 of the separator 30 can effectively shield the scattering of the heat-resistant material 32 composed of the powder.

Further, according to the electric appliance 1, ceramics can also be used to form a powder.

According to the electric appliance 1 thus constituted, the heat-resistant material 32 is a porous material which is particularly likely to scatter even like a ceramic of an inorganic compound formed at a high temperature, and can seal the inside of the separator 30 which is adjacent to the ceramic. That is, even if the electric appliance 1 vibrates or is subjected to an impact, in the electric appliance 1, the molten material 31 of the separator 30 can effectively shield the heat resistance caused by the porous ceramic formed by the combination of the particles and the binder. The scattering of the material 32.

Next, a method of joining the separators 30 of the bonding apparatus 1 to each other, and a separator bonding apparatus 100 embodying the bonding method will be described with reference to FIGS. 5 to 10.

FIG. 5 is a perspective view showing the separator joining device 100 of the separator 30 of the bonding apparatus 1. FIG. 6 is a side view showing the vicinity of the vacuum suction conveyance roller 540 of the separator joining device 100 of the separator 30 of the bonding apparatus 1. Fig. 7 is a side view showing the vicinity of the suction conveyor 310 of the separator joining device 100 of the separator 30 of the joining device 1. FIG. 8 is a side view showing the vicinity of the bagged electrode adsorption pad 810 of the separator joining device 100 of the separator 30 of the bonding apparatus 1. FIG. 9 is a perspective view showing the vicinity of the heating and pressing member 710 of the separator joining device 100 of the separator 30 of the bonding apparatus 1. Figure 10 is a cross-sectional view taken on line 10-10 of Figure 9. Figure.

Here, the heating and pressing member 710 may be joined to each other while the pressure-receiving separators 30 are heated to each other, and then the positive electrode 10 may be inserted between the pair of separators 30. However, from the viewpoint of mass productivity and quality, the configuration in which the separators 30 of the positive electrode 10 are held and heated by the heating and pressing member 710 is bonded to each other.

As shown in FIG. 5, in the separator joining device 100, the positive electrode 10 is wound and held in a roll shape of the positive electrode winding roller 210. The positive electrode winding roller 210 is formed of a cylindrical shape and is driven to rotate in the clockwise direction by the rotation of the suction conveyor 310 to be described later. The positive electrode 10 carried out from the positive electrode winding roller 210 is conveyed in the direction of the vacuum suction conveyance rollers 540 and 640, which will be described later, via the transport roller 220.

The suction conveyor 310 corresponding to the conveying device is constituted by an endless belt, and a plurality of suction ports are provided on the surface. A plurality of rotating rollers 320 are provided on the inner peripheral surface of the suction conveyor 310. One of the plurality of rotating rollers 320 is a driving roller with power, and the other is a driven roller. The suction conveyor 310 that rotates in the clockwise direction by the plurality of rotating rollers 320 is disposed closer to the downstream side and the upstream side in the conveying direction of the positive electrode 10 than the vacuum suction conveying rollers 540 and 640, for example. There are 2 groups.

The cutting members 410 and 420 that cut off the positive electrode 10 are disposed between two sets of suction conveyors 310 that are disposed closer to the vacuum suction conveying rollers 540 and 640. positive electrode The downstream direction of the transport direction of 10. The cutting member 410 is provided with a linear sharp cutting edge at the tip end to cut one end of the continuous positive electrode 10. The cutting member 420 is provided with a sharply cut cutting edge at the front end to cut the other end of the positive electrode 10 which has been cut at one end. The shape of the meandering cutting blade of the cutting member 420 corresponds to the shape of the positive electrode terminal 11a.

The separator 30 of one of the pair of separators 30 is wound and held in a roll shape of the separator winding roller 510. The core of the roller winding member 510 is wound against the side of the molten material 31 of one partition member 30. The separator winding roller 510 is formed of a cylindrical shape and is driven by the rotation of the vacuum suction conveyance roller 540 corresponding to the conveying device, and the rotation is in the counterclockwise direction. The separator 30 is held by the pressure roller 520 and the pinch roller 530, and is conveyed while having a constant tension, and is rotated counterclockwise in a state of being vacuum-adsorbed to the vacuum suction conveyance roller 540. The vacuum suction conveyance roller 540 is formed by a cylindrical shape, and a plurality of suction ports are provided in plural. One separator 30 is provided close to the vacuum suction conveyance roller 540, and is cut at a constant width by a cutting member 430 having a sharp cutting edge at its tip end.

Similarly, the separator 30 of the other of the pair of separators 30 is wound and held in a roll shape of the separator winding roller 610. The axial center of the separator winding roller 610 is abutted against the side of the molten material 31 of the other separator 30. The separator winding roller 610 is formed of a cylindrical shape and is driven by the rotation of the vacuum suction conveyance roller 640 corresponding to the conveying device, and the rotation is in the clockwise direction. Another partition 30 is pressurized The sub-620 is held by the pinch roller 630, and is conveyed while having a constant tension, and is rotated clockwise in a state where it is vacuum-adsorbed to the vacuum suction conveyance roller 640. The vacuum suction conveyance roller 640 is formed by a cylindrical shape, and a plurality of suction ports are provided. The other separator 30 is provided close to the vacuum suction conveyance roller 640, and is cut at a constant width by a cutting member 440 having a sharp cutting edge at its tip end.

At a portion where the gap between the transfer rollers 540 and 640 is suctioned by the vacuum, as in the case where the pair of separators 30 hold the positive electrode 10, the separator 30, the positive electrode 10, and the other separator 30 are stacked and transported.

As shown in FIG. 9, the heating and pressing member 710 is disposed above and below both ends of the pair of separators 30 in the longitudinal direction, and moves up and down so as to start to separate from the pair of separators 30. Further, in Fig. 9, originally, a state in which one separator 30, the positive electrode 10, and the other separator 30 are laminated is shown, but here, it is in a state of being separated. One of the separators 30 of the positive electrode 10 is held and joined to each other to form the pocket electrode 50. The pair of separators 30 are disposed such that the heat-resistant members 32 face each other. The heating and pressing member 710 is formed of, for example, a stainless material or copper, and is formed in a rectangular parallelepiped shape. The heating and pressing member 710 is moved up and down by a driving unit (not shown). The heating and pressing member 710 is heated by, for example, a heating wire or a heating bulb.

As shown in Fig. 10 (a), a plurality of heating and pressing members 710 are disposed such that both ends of the pair of separators 30 in the longitudinal direction are sandwiched from the vertical direction. The configuration shown in cross section in Fig. 10(a) is equivalent to This is shown in a perspective view in Fig. 9. Further, in Fig. 10(a), originally, a state in which one separator 30, the positive electrode 10, and the other separator 30 are laminated is shown, but here, it is in a state of being separated.

As shown in FIG. 10(b), the heating and pressing member 710 holds two of the longitudinal directions of the pair of separators 30 from the upper and lower directions by driving the plurality of heating and pressing members 710 in the direction indicated by P1 in the drawing. After the end, the pair of separators 30 are joined. At this time, the pair of separators 30 are heated and pressurized by the heating and pressing member 710 to be joined.

As shown in FIG. 10(c), a plurality of heating and pressing members 710 are driven in a direction indicated by P2 in the drawing, and are separated from the joined pair of separators 30. Referring to Fig. 11 and Fig. 10, in the above-described separator joining method, the heating and pressing member 710 is heated and held by one of the positive electrodes 10 against the separator 30 and pressurized to join the pair of separators 30. The joining process of such a pair of separators 30 corresponds to a process of forming the bagged electrode 50 which is excellent in terms of mass productivity or quality.

The bagged electrode adsorption pad 810 corresponding to the transfer device temporarily mounts the completed packaged electrode 50 to the designated mounting table 850. The bagged electrode adsorption pad 810 is formed of a plate shape, and a plurality of suction ports are provided on a surface that is in contact with the bagged electrode 50. The bagged electrode adsorption pad 810 is connected to one end of the freely stretchable stretchable portion 820 by using, for example, an air compressor (not shown) as a power. The other end of the expansion and contraction portion 820 is coupled to a plate-shaped support member 830. The support member 830 reciprocates along the pair of rails 840 by, for example, a turning motor (not shown). So, the bagged electrode The adsorption pad 810 sucks and moves the bagged electrode 50 conveyed by the suction conveyor 310 by the expansion and contraction portion 820, the support member 830, and the pair of rails 840, and places it on the mounting table 850.

The vacuum suction conveyance roller 540, the suction conveyor 310, and the bagged electrode adsorption pad 810 shown in FIG. 6, FIG. 7, and FIG. 8 are equivalent to being conveyed in a state in which the separator 30 is adsorbed, respectively. Transfer device. Here, the molten material 31 of the separator 30 is made of, for example, polypropylene, and does not scatter. On the other hand, the heat-resistant material 32 of the separator 30 is made of, for example, a ceramic in which an inorganic compound is molded at a high temperature, and is easily scattered into a powder. Therefore, the vacuum suction conveyance roller 540, the suction conveyor 310, and the bagged electrode adsorption pad 810 are configured not to attract the heat-resistant material 32 of the separator 30 but to attract the side of the molten material 31 of the separator 30. According to the electric appliance 1 configured as described above, the heat transfer material 32 of the separator 30 can be prevented from scattering in the separator joining device 100 by sucking the side of the molten material 31 which is difficult to scatter the separator 30.

Further, each of the conveyance devices of the vacuum suction conveyance roller 540, the suction conveyor 310, and the bagged electrode adsorption pad 810 can be held while being sucked by the side of the molten material 31 which is not scattered by the separator 30. The attraction. Since the suction force of the partition member 30 by each conveying device is kept constant, the feeding size of the partitioning member 30 can be made constant. Further, in each of the conveying apparatuses, since the side of the heat-resistant material 32 which is easy to scatter is not attracted, the heat-resistant material 32 does not scatter. Therefore, it is not necessary to have a cleaning and removal scattering around the respective conveying devices. The body of the powder, etc. Therefore, the structure of the spacer joining device 100 can be miniaturized, and the cost can be suppressed. Further, each of the conveying devices can prevent the heat-resistant material 32 from being peeled off from the molten material 31, or attracting scratches or contact flaws, without attracting the side of the heat-resistant material 32 which is scattered and easily peeled off. Further, since each of the conveying devices does not attract the side of the heat-resistant material 32 which is easily scattered, it is not clogged by the powder, and it is not necessary to provide a filter for removing the powder in each of the conveying devices. And cleanly exchanged regularly.

According to the above-described method of joining the separators 30 of the electric appliance 1 and the separator joining device 100 embodying the joining method, the following effects are exhibited.

The separator joining method of the electric appliance 1 and the separator joining device 100 embodying the joining method are for the first electrode (positive electrode 10) and the second electrode having the same polarity as the first electrode (positive electrode 10) ( The negative electrode 20) is a device in which the separations 30 of the alternately stacked layers are joined to each other. The separator 30 including the molten material 31 and the heat-resistant material 32 which is laminated only on one side of the molten material 31 and higher than the melting temperature of the molten material 31 is used. Here, one side of the molten material 31 of the separator 30 is held and conveyed, and the separators 30 which are adjacent to each other and adjacent to the heat-resistant material 32 of the adjacent separator 30 are joined to each other.

In the separator joining method of the electric appliance 1 configured as described above, and the separator joining device 100, the conveying device holds the side of the molten material 31 which is difficult to scatter by the separator 30, and the separator is joined by the separator. 100, the heat-resistant material of the partition member 30 can be prevented 32 scattered. Therefore, it is possible to keep the inside of the separator joining device 100 clean, and it is possible to maintain the electrical characteristics of the electric appliance 1 to which the separator 30 has been joined.

Further, each of the conveyance devices of the vacuum suction conveyance roller 540, the suction conveyor 310, and the bagged electrode adsorption pad 810 can be held while being sucked by the side of the molten material 31 which is not scattered by the separator 30. The attraction. Since the suction force of the partition member 30 by each conveying device is kept constant, the feeding size of the partitioning member 30 can be made constant.

Further, in each of the conveying apparatuses, since the side of the heat-resistant material 32 which is easy to scatter is not attracted, the heat-resistant material 32 does not scatter. Therefore, it is not necessary to provide a mechanism for cleaning and removing the scattered powder or the like around the respective conveying devices. Therefore, the structure of the spacer joining device 100 can be miniaturized, and the cost can be suppressed.

Further, each of the conveying devices can prevent the heat-resistant material 32 from being peeled off from the molten material 31, or attracting scratches or contact flaws, without attracting the side of the heat-resistant material 32 which is scattered and easily peeled off.

Further, since each of the conveying devices does not attract the side of the heat-resistant material 32 which is easily scattered, it is not clogged by the powder, and it is not necessary to provide a filter for removing the powder in each of the conveying devices. And cleanly exchanged regularly. Therefore, it is possible to reduce the working hours related to cleaning.

Further, in the joining of the separator 30 of the electric appliance 1, in terms of the heat-resistant material 32 of the joined separator 30, it is also possible to use the coating in the fusion. The powder 31 is melted and dried.

According to this configuration, the heat-resistant material 32 is particularly effective in preventing the heat-resistant material 32 of the separator 30 from scattering even in the separator bonding apparatus 100 even if it is a powdery body which is easily scattered like a powder. Further, since each conveying device does not attract the powder, there is no clogging due to the powder.

Further, in the joining of the separator 30 of the electric appliance 1, ceramics may be used in terms of the heat-resistant material 32 of the joined separator 30.

In such a configuration, the heat-resistant material 32 is particularly porous in the separator joining device 100, and the heat-resistant material 32 of the separator 30 can be effectively prevented from scattering even in the case of a porous material which is easily scattered like a ceramic in which an inorganic compound is molded at a high temperature. . Further, since each of the transporting devices does not attract ceramics, there is no clogging due to the ceramics.

[Second embodiment]

In the electric appliance relating to the second embodiment, it will be explained with reference to Fig. 11 .

In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

FIG. 11 is a cross-sectional view showing a part of the electric appliance in a state in which the positive electrode 10 is laminated on both ends of the pouch electrode 70 formed by enclosing the negative electrode 20 with a pair of separators 30.

The heat resistant material 32 of the separator 30 and the negative electrode active material 22 of the negative electrode 20 are abutted to generate a frictional force. So even if the appliance vibrates or When the impact is applied, the movement of the negative electrode 20 can be suppressed in the pocket electrode 50 in which the negative electrode 20 is packed by the separator 30. That is, in the electric appliance, by suppressing variations in the lamination of the negative electrode 20, damage to the electric appliance is prevented, and electrical characteristics can be maintained.

In the electric appliance according to the second embodiment, the friction between the heat-resistant material 32 and the negative electrode active material 22 of the negative electrode 20 is generated, and the friction between the heat-resistant material 32 and the positive electrode active material 12 of the positive electrode 10 is generated. It is effective on larger occasions.

In addition, the present invention can be variously modified according to the structure described in the patent application, and such modifications are also within the scope of the invention.

In the first embodiment, the conveyance device (the vacuum suction conveyance roller 540, the suction conveyor 310, and the bagged electrode adsorption pad 810) is sucked and conveyed on the side of the molten material 31 of the separator 30. The configuration is not limited to such a configuration. For example, it is configured to be transported while holding the side of the molten material 31 of the separator 30 by the transport device, or by transporting the side of the molten material 31 of the separator 30 by the transport device, and it is possible to seal the adjacent heat-resistant material 32. The interior of the divider 30.

In the embodiment, the configuration in which the positive electrode 10 is packaged by the pair of separators 30 by the separator bonding apparatus 100 is described as an example. However, the configuration is not limited thereto. For example, it is also possible to form the negative electrode 20 by a pair of separators 30 by the separator joining device 100. Such a configuration is generated in the negative electrode of the heat-resistant material 32 and the negative electrode 20 The frictional force between the sex substances 22 is effective in a larger case than the frictional force generated between the heat-resistant material 32 and the positive electrode active material 12 of the positive electrode 10.

The present application is based on the Japanese Patent Application No. 2012-286988 filed on Dec. 28, 2012, and the Japanese Patent Application No. 2012-286993 filed on Dec. 28, 2012; Be referred to and programmed.

10‧‧‧ positive electrode (first electrode)

11‧‧‧ positive current collector

12‧‧‧ positive active material

20‧‧‧Negative electrode (2nd electrode)

21‧‧‧Negative current collector

22‧‧‧Negative active material

30‧‧‧Parts

31‧‧‧ molten material

32‧‧‧Heat-resistant materials

50‧‧‧Bagged electrode

Claims (10)

An electric device having a power generating element formed by laminating a first electrode and a second electrode having a polarity different from that of the first electrode; the separator includes a molten material and is laminated only in the melting A heat-resistant material having a single surface and a melting temperature higher than a melting temperature of the molten material; and the adjacent separators are joined to each other such that the heat-resistant materials are opposed to each other. The electric appliance according to claim 1, wherein the first electrode and the second electrode are sandwiched between the first electrode and the second electrode, and the frictional force of the heat-resistant material is relatively high. The electric appliance according to claim 1 or 2, wherein the heat resistant material comprises a powder coated onto the molten material and dried. The electric appliance of claim 3, wherein the powder is formed of ceramic. An electric device having a power generating element formed by laminating a first electrode and a second electrode having a polarity different from that of the first electrode; the separator includes a molten material and is laminated only in the melting a heat-resistant material having a single surface and a melting temperature higher than a melting temperature of the molten material; and conveying the side of the molten material of the separator by a conveying device, and transporting the heat-resistant materials of the adjacent separators to each other and The aforementioned spacers that have been adjacent are joined to each other. A separator joining device for an electric appliance, which is a joining device for joining a separator that alternately laminates a first electrode and a second electrode having a polarity different from that of the first electrode, and is characterized in that the separator is used to contain a molten material And a heat-resistant material that is laminated on only one side of the molten material and higher than a melting temperature of the molten material; and conveys the side of the molten material of the separator by a conveying device, and transports the adjacent ones The foregoing heat-resistant members of the separator are opposed to each other and joined to the aforementioned separators adjacent to each other. A separator joining device for an electric appliance according to claim 6, wherein the side of the molten material of the separator is sucked and conveyed. The separator joining device of the electric appliance of claim 6 or 7, wherein the heat-resistant material of the aforementioned partitioning member is a powder which is applied to the molten material and dried. The separator joining device of the electric appliance of claim 8, wherein the powder body is formed of ceramic. A method of joining separators for an electric appliance is a method of joining mutually alternately laminated first electrodes and separators of a second electrode having a polarity different from that of the first electrodes, characterized in that the separator is used to contain a molten material And a heat-resistant material that is laminated on only one side of the molten material and higher than a melting temperature of the molten material; and is conveyed while holding the side of the molten material of the separator; The aforementioned heat-resistant materials of the adjacent separators are opposed to each other and joined to the adjacent separators.